Основания
Presentation
•
Chemistry
•
2nd - 4th Grade
•
Hard
Сергей Мизин
FREE Resource
1 Slide • 4 Questions
1
Основания
2
Multiple Choice
Щелочи - это
нерастворимые в воде оксиды
нерастворимые в воде основания
растворимые в воде оксиды
растворимые в воде основания
3
Multiple Choice
Выберите ряд, в котором расположены только щелочи:
LiOH, Cu(OH)2, Ba(OH)2
Fe(OH)2, Mg(OH)2, KOH
Ca(OH)2, Zn(OH)2, NaOH
NaOH, KOH, Ba(OH)2
4
Multiple Choice
Выберите формулу гидроксид-иона:
OH-
OH+
OH
O2-
5
Multiple Choice
В присутствии щелочей фенолфталеин изменяет свою окраску на:
фиолетовую
красную
желтую
малиновую
Основания
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